Multi-state icons - where can I get them?

I'm building a photographic website and want a console at the bottom of the screen like Windows Photo Viewer. Specifically, I'm looking for backwards and forwards arrow icons that have three states: default, hover, depressed.

Multimedia Control Icons is a good search phrase. If you are good with Photoshop you can duplicate Windows Photo Viewer. Otherwise you will want an icon set. Here is a reference for some free ones: http://findicons.com/search/multimedia-control